Refrigerating apparatus.



A. E. BossE'.

REFRIGERATING APPARATUS. APPLICATION FILED MAR.15, 19 12.

: L092A26; Patented Apr. 7, 1914b I k gflasse;

2 SHEETS-SHEET l.

WI THESSEW: IIWENTDR A A. E. Boss'ri' REFRIGERATING APPARATUS.

APPLICATION FILED MAR. 16, 1912.

i 1,092,426.. Patented Apr. 7, 1914 2 SHEETS-SHEET 2.

' mum mmtssss: INVENTOR ADOLPHE E. BOSSE, or PITTSBURGH, PENNSYLVANIA.

oeaahe.

Specification of Letters Patent. Application filed March 15, 1912. Serial No. 683,924.

REFRIGERATING APPARATUS.

Patented Apr. t, 19114.

' To all whom it may concern:

Be it known that I, AooLPHE E. Bossii, a citizen of the United States, residing in Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invente certain new and useful Improvements in Refrigerating Apparatus, of which the following is a specification.

My invention relates to refrigerating apparatus and it has more articular relatlon to means for preventing t e improper oper: ation of the same.

My invention is particularly applicable to v refrigerating apparatus of the so called ab? sorption type, but may be employed as well in compression or other systems with slight modifications as will bereadily apparent to those skilled in the'art. I The principal object of.my invention 1s to provide a simple and eflicient means for preventing improper operation of the apparatus whereby accumulations of hlgh pressure of the gas are prevented.

The nature and characteristic features of my invention will be more readily understood from the, following description, taken in connection with the accompanying drawings, forming part hereof, in which- Figure 1 is an elevational View, to a certain extent diagrammatic, of a refrigerating apparatus of the absorption type, and embodying the main features of my present invention; Fig. 2 is a plan view of the device for preventing improper operation 'of the" apparatus shown in Fig. 1, the samev constituting the principal novel part of my present invention; Fig. 3 is a vertical, central, longitudinal 3. action of the device shown in Fig. 2; Fig. 4 is a fragmentary detail of a portion of the device shown in Fig. 2, the parts being shown in shifted or. operative relationship; Fig. 5 is a fragmentary sectional view of a' portion of the device shown in Figs. 2 and 3, but with-the parts in the positions shown in Fig. 4; and Fig. 6 is a transverse sectional view of the lower portion of the ammonia valve used in connection with the device shown in Figs. '2 and 3.

Referring to the drawings, in the par ticular embodiment of my invention therein shown, 7 is an ammonia generator which may lie of the type shown in my previous preferred type, thesame being adapted to application for Letters Patent, Serial No. 564,453, filed June 1, 1910, or of any other contain a quantity of aqua ammonia, from wh1ch the ammonia gas may be driven off by application of heat. The heat may be applied by a burner located within the base of the generator 7 which may be supplied with gas from pipe 8 which communicates with the outlet 57 of the safety device 9 constituting the principal novel element of my invention. The gas is supplied to the inlet 56 of the safety device 9 by means of a pipe 10 from any suitable source of supply, and is controlled by and passes through the safety device 9 in a manner to be hereinafter more fully described. The ammonia gas which is driven off from the generator 7 by the application of heat as aforesaid passes through a pipe 11 to a rectifier 14'which may be of any preferred design such for example as is set forth in my previous application for Letters Patent, Serial No. 621,456, filed April 17, 1911, or

of any other type which will effectively separate the'water va or which may be improperly driven off rom the generator 7 along with the ammonia gas and will condense and return the same to the generator. The ammonia gaspasses from the rectifier 14 through a ipe 15 to the main ammonia valve 12, which constitutes part of the safety device 9 and will be hereinafter more fully described.

From the ammonia valve 12, the ammonia gas passes through the pipe 13 to a condenser 16 of any preferred design, but which as shown may consist of a series of horizontal pipes, in each of which is centrally arranged a water cooling pipe 17 which is supplied with water through a pipe 18 which extends from the water ,outlet 49 of the safety device 9. The water passes to the water inlet 48 of the safety device 9 by means of a pipe 19 extending from any suitable source of supply and passes through and to a certain extent controls part of the safety device 9 in a manner to be hereinafter more fully set fortha The cooling water after passing through the condenser 16 passes through the pipe to the waste or to a radiating coil ifit is desired for reuse. A' branch pipe 66 also extends from pipe 18 to furnish the water for cooling the rectifier, the waste from the rectifier passing off throu h the pipe 68. While passing through t e condenser 16, the ammonia gas will be condensed into anhydrous liquid ammonia and will pass through a pipe 20 into a suitable receiver 21. Extending from the lower part of the receiver 21 is As before stated the main ammonia valve 12 is interposed in the pipe line between the rectifier 14 and the condenser 16. The

safety device 9 is mounted'on the valve 12 and comprises a housing 27 preferably made in two parts 28 and 29, the part 28 being secured to the body of the valve 12 by means of a yoke or strap 30. The arrangement of the yoke 30 and the associatedparts on the portion 28 of housing 27 is such that the housing 27 may be shifted to a certain extent vertically on the body of the valve 12 for the purposes of adjustment. The valve 12 is of the usual globe type as shown inFig. 6 in longitudinal section, and the valve disk 31 is controlled by means of a stem 32 threaded as at 33 in the gland 34 which. is mounted in the body 35 of the valve 12. The valve stem 32 may be provided at the top with a handle or wheel of any of the usual types, but not shown in the drawings. Mounted on the valve stem .32 are two collars 36 forming an annular groove in which is confined a plate 37 having a fiat edge 38 on the side toward the housing 27 of the safety device 9. The plate 37 on the side opposite the flat edge 38 is provided with a vertical groove or recess 39 which engages an upwardly extending bar 40, secured to or integral with the yoke member 30. The arrangement of the plate 37 is such with respectto the valve stem 32 as to rise and fall inunison, said valve stem being constrained from rotation in connection therewith by means of the engage-- ment with theupwardly extending bar 40.

Mounted in the portion 28 of the housing 27 is a cock plug 41 having an upwardly extending stem 42 on the top of which "is mounted a plate 43 having itsperiphery circular for the greater portion but having a flat side 44 which co-acts with the flat,s1de

38 of the plate 37 which is carried by the valve stem 32 of the ammonia valve 12. The plate 43 may also be provided with a handle 45 for the manual operation of the plug 41. The portion 28 of the housing 27 is also made hollow for a portion of its length to provide a cylinder 46 in which is mounted a piston 47. The portion 28 of the housing 27 is also provided with an inlet 48 and an outlet 49 for the passage of the water which is used for condensation purposes in the refrigerating apparatus proper. The inlet 48 is arranged opposite the plug. 41, While the outlet 49 is arranged preferably .on the other side of the housing 27 and some distance from the plu 41. The piston 47 arranged in the cylin er 46 under the tension of a spring 50 tends to advance in the cylinder upward the plug 41 and when no water is flowin will almost entirely close the outlet 49 as c early shown in Fig. 3 of the drawings. The plug 41 is provided with two openings, which in the normal arrangement of the apparatus are brought opposite respectively the inlet 48 and the cylinder 46 so that the water which is used for condensation purposes and which passes therethrough will force the piston 47 backwardly in the cylinder 46 in order to pass out through the outlet 49. The piston 46 is provided with a rearwardly extending rod 51 which passesthrough a stufiingibox 52 of any preferred design.

The portion 29 of the housing 27 is secured to the portion 28 of said housin by means of an overlapping collar 53 w ichis locked to the portion 28 by means of a set screw 54. Within the portion 29 of the housing 27 is mounted a valve disk 55 for the control of the gas, steam or other heating mediumwhich is used in the apparatus for driving off the ammonia gas from the .aqua ammonia contained within the generator 7. The portion 29 of the housing 27 is provided with an inlet 56 and an outlet 57, the valve disk 55 being arranged on its seat 58 interposed. between said inlet 56 and said outlet 57. The valve disk 55 is mounted on a forwardly extending stem 59 whic passes through a stufiing box 60 of any preferred design and-is connected preferably by a flexible joint 61 to the, rear end of the piston rod 51 so that the valve 55 which controls the supply of heating medium to the refrigerating apparatus proper is con.- strained to move in' unison with the piston 47. t

The manner of operation of the appara; tus will now be. easily understood. When it is desired to drive off and condense the ammonia gas from the generator 7 to store the anhydrous ammonia in the receiver 21, the valve 12 is operated to permit the ammonia gas to pass therethrough, and when this is done the plate 37 carried by the valve stem 32" will be raised above the adjacent plate 43 which is mounted on the stem 42 of the cock plug41. When the valve 12 is opened the ammonia gas may then pass freely from the generator 7 and for the purpose of. condensing the same, the cooling water which enters the system through the pipe 19 passes through the inlet 48' of hous- I ing 27, thence through the'cylinder 46 and then out through the outlet 49 to pipe 18 and thence to the condenser coils. In order to permit the water to pass through the cylinder 46 as aforesaid, the plug 41 is turned to bring its openings in register with the inlet 48 and'cylinder 46 and when this is done the plate 43 carried at the topof the plug stem 42 will be turned, andthe parts will occupy the positions shown in Figs. 4 and 5. When the parts are in these positions the plate 43 carried by the plug stem 42 will have its circular portion extending under the plate 37 which is carried by the stem 32 and when the plug is thusin its open position it will not be possible to close the ammonia valve 12. The water passing through the plug 41 into the cylinder 46 will force the piston 47 backward against the tension of the spring 50 and through the piston rod 51 and valve rod 59 will open valve 55 and permit the gas or other heating medium to passfrom the inlet 56 to the outlet 57 and thence tothe generator 7.

It will be seen that if the water supply for any reasonbe stopped, or arbitrarily shut off by the operation of the plug 41 and the pressure of the water thereby relieved, the spring 50 will cause the piston 47 to return to the inoperative position shown in Figs. 2 and 3, and through the intermediary of the rods 51 and 59 will automatically close the valve disk 55 on its seat 58 and thus'cut off the supply of heat to the generatori Furthermore it will be seen that it will not be possible to close the ammonia valve unless the plug 41 be first turned to the position shown in Figs. 2 and 3,thereby relieving the water pressure and automatically closing the valve 55 on its seat as aforesaid to cut oil the supply of heat to the generator. By this'arrangement it will not be possible toimproperly actuate the valves to cause an undue increase of pressure in the generator which might cause said generator to explode, as it will be seen that no heat can be supplied to the generator unless the valve 12 be first opened to permit the ammonia gas to pass and the plug 41 turned to permit the water to flow to the condenser.

Having thus described the nature and characteristic features of my invention what I claim as new and desire to secure by Letters Patent is r 1. In a refrigerating apparatus, an ammo -nia generator, a condenser, means for supplying a heating medium to theammonia generator, means for supplying a cooling medium to the condenser, a valve for controlling the supply of heating medium to the generator, and means automatically controlled by the flow of cooling medium to the condenser for operating said valve, said means comprising a cylinder constituting a portion of the conduit for the flow of coollng medium, a piston arranged in said cylinder, and a connection between said .piston and the valve.

2. In a refrigeratin apparatus, an ammonia generator, a condlenser, means for supplying a heating medium to the ammonia generator, means for supplying a cooling medium to the condenser, a valve for controlling the supply of heating medium to the generator, and means automatically controlled by the fiow of cooling medium .to the condenser for operating said valve, said means comprising a cylinder constituting a portion of the conduit for the flow of cooling medium, a piston arranged in said cylinder, a connection between said piston and the 7 generator during the flow of cooling medium to the condenser.

.4. "In-arefrigerating apparatus, an ammonia generator, a condenser, means for controlling the flow of ammonia gas from the generator, means for supplying a heating medium to the generator, means for supplying a cooling medium to the condenser, means for controlling the flow of cooling medium to the condenser, means controlled by the cooling medium, controlling means for locking open the means for controlling the flow of ammonia gas from the generator dur-- mg the flow of cooling medlum to the condenser, and means automatlcally controlled by the flow of cooling medium to the condenser for controlling the supply of heating medium to the generator.

5. In a refrigerating apparatus, an ammonia generator, a condenser, means for supplying a heating medium to the generator, 1

means for supplying a'cooling medium to the condenser, means for controlling the flow of cooling medium to the condenser, a valve for controlling the flow of ammonia gas from the generator to the condenser, and means for locking said ammonia valve open during the flow of cooling medium to the condenser.

6. In a refrigerating apparatus, an ammonia generator, a condenser, means for supplying a heating medium td the generator, means for supplying a cooling medium to the condenser, means for controlling the flow of cooling medium to the condenser, a valve for controlling the flow of ammonia gas from the generator to the condenser, meany for locking said ammonia valve open during the flow of cooling medium to the condenser,

' and means automatically controlled by the flow of cooling medium to the condenser for controlling the supply of heating medium to the generator.

7. In a refrigerating apparatus, an ammonia generator, a condenser, a valve for controlling the flow of ammonia gas from the generator to the condenser, a cock for controlling the supply of cooling medium to the condenser, a valve for controlling the supply of heating medium to the generator, said heating medium valve being automatically controlled by the flow of cooling medium to i5 signed my name in the presence of two Wit- 20 nesses.

ADOLPHE E. BOSSE.

. Witnesses:

ADELL Voenn, EVELYN C. SPROULL, 

